Although the .c source files have the GPL prelude, the full text of the license is not present in the distribution of buncho-0.3.tgz
It isn't clear whether the license covers the scripts or regnat.S.
Suggest adding COPYING to the build of the tarball next time.
I wasn't able to find any "make dist" target, so the attached patch adds one. COPYING still needs to be added though.
add dist target